[填空题]
Estimate how many mor40(cx- k jy5qmf 0vzma *l;lpeuuj -s6u;zg )le 9vu-) 1hxr )kh)pqknecules of air are in each 2.0-L breath you inhale that were also in the last breath Galileo took. [Hint: Assume the atmosphere is about 10 km high and of covqkn1uph9x)r) - hke)nstant density.] $\frac{molecules}{breath}$